# GNU Guix --- Functional package management for GNU
-# Copyright © 2012, 2013, 2014 Ludovic Courtès <ludo@gnu.org>
+# Copyright © 2012, 2013, 2014, 2016 Ludovic Courtès <ludo@gnu.org>
#
# This file is part of GNU Guix.
#
# Cross building.
guix build coreutils --target=mips64el-linux-gnu --dry-run --no-substitutes
+# Replacements.
+drv1=`guix build guix --with-input=guile=guile-next -d`
+drv2=`guix build guix -d`
+test "$drv1" != "$drv2"
+
+drv1=`guix build guile -d`
+drv2=`guix build guile --with-input=gimp=ruby -d`
+test "$drv1" = "$drv2"
+
+if guix build guile --with-input=libunistring=something-really-silly
+then false; else true; fi
+
# Parsing package names and versions.
guix build -n time # PASS
guix build -n time-1.7 # PASS, version found
guix build --file="$module_dir/gexp.scm" -d | grep 'gexp\.drv'
# Using 'GUIX_BUILD_OPTIONS'.
-GUIX_BUILD_OPTIONS="--dry-run"
+GUIX_BUILD_OPTIONS="--dry-run --no-grafts"
export GUIX_BUILD_OPTIONS
guix build emacs